EP2910283B1 - Fire protection flap - Google Patents
Fire protection flap Download PDFInfo
- Publication number
- EP2910283B1 EP2910283B1 EP15155350.0A EP15155350A EP2910283B1 EP 2910283 B1 EP2910283 B1 EP 2910283B1 EP 15155350 A EP15155350 A EP 15155350A EP 2910283 B1 EP2910283 B1 EP 2910283B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuating handle
- rotation
- fire protection
- flap
- open position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000903 blocking effect Effects 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012858 resilient material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/12—Hinged dampers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
- F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages
Definitions
- the invention relates to a fire damper with a housing and with a, in particular centrally on the housing cross section, between an open position and a closed position about a pivot axis pivotally mounted shut-off valve, wherein for pivoting, ie for clamping, the shut-off valve from its closed position against the restoring force in its open position a directly or indirectly cooperating with the shut-off valve and arranged on the outside of the housing to an associated rotary axis rotatable actuating handle is provided, wherein at least one stop is provided, against which the butterfly valve in its open position directly or indirectly abuts, and wherein the fire damper a triggering device, which can be brought into a fixing position and by heat or the like, for example in case of fire, triggered and thus automatically displaced into a release position, and wherein the Betrelincysgrif f and thus connected to it the shut-off valve in the open position against a restoring force by means of the release device located in its fixing position in a position corresponding to the open position of
- a fire damper with a housing and with a pivotally mounted therein about a pivot axis around the known butterfly valve is known.
- DE 42 34 800 A1 Basis for the preamble of claim 1
- a similar fire damper is known.
- the butterfly valve should be aligned in the open position as parallel as possible to the flow direction.
- the stop arranged in the butterfly valve is adjustable in order to compensate for tolerance variations, as they may exist, for example, within the Obviouslyssmechanismusses. On site, the butterfly valve is moved to its open position and then fixes the stop in this position accordingly.
- the disadvantage here is that it is not guaranteed in this way that the shut-off valve is actually aligned parallel to the flow direction.
- the object of the invention is to avoid the aforementioned disadvantages and to provide a fire damper, wherein in the open position, the butterfly valve is aligned as parallel as possible to the flow direction.
- This object is achieved in that either the material of the actuating handle and / or arranged between the actuating handle and the axis of rotation intermediate element is (are) designed such that a further displacement beyond the open position of the butterfly valve, in particular twisting, cooperating with the triggering device Part of the operating handle in the same direction of rotation, overcoming a after locking done on the butterfly valve and the butterfly valve pressing against the stop, additional restoring force is possible.
- the embodiment of the invention allows that the stop can already be factory mounted so at the desired location on the inside of the housing, that the butterfly valve is aligned in the applied state in each case parallel to the flow direction. This is possible by the material of the actuating handle and / or by an intermediate element arranged between the actuating handle and the axis of rotation or the butterfly valve.
- the restoring force acts between the housing of the fire damper and the operating handle or between the housing of the fire damper and the intermediate element.
- the material of the actuating handle is designed such that a further displacement beyond the open position of the butterfly valve is possible by the material itself, the additional restoring force is generated by this material.
- the material may be, for example, an elastomer or a torturous metal, which is arranged, for example, between the end of the axis of rotation and the actuating handle.
- the additional restoring force acts between the intermediate element and the actuating handle.
- the intermediate element can be arranged rotationally fixed relative to the butterfly valve or with respect to the axis of rotation with which the butterfly valve is connected.
- the restoring force engages on the one hand on the housing of the fire damper and on the other hand on the operating handle, the restoring force, which is generated for example by a coil spring, is "out of service” in the locked state of the butterfly valve, since the operating handle is locked. In this state, however, the additional restoring force is still “active” because the additional restoring force presses the butterfly valve against the stop. Therefore, at least in this position of the butterfly valve, the additional restoring force is greater than the frictional force acting between the inside of the housing and the butterfly valve.
- the actuating handle can still be moved beyond the point at which the shut-off flap already comes into contact with the stop in the same direction of rotation.
- the additional restoring force is at least so great that the fire damper in the open position always rests against the stop, so that it does not come to unwanted vibrations.
- the actuating handle and / or the intermediate element may (may) consist of a suitable material, such as a plastic. Due to the resulting elastic bending the above-described displacement of the operating handle is possible. Alternatively or in addition can (can) the operating handle and / or the intermediate element at least one local weakening, for example in the form of a notch or constriction, which allow the above-described displacement.
- the butterfly valve In the closed position, the butterfly valve is in contact with the inside of the housing over its circumference. In that regard, at the beginning of the pivoting from its closed position to its open position, the highest frictional forces resulting from the contact between the butterfly valve and the inside of the housing to overcome.
- the frictional forces occurring in the area, when the butterfly valve has reached its open position or when the butterfly valve is close to reaching its open position, may not exceed at least the additional restoring force. If the frictional forces in this area were greater than, for example, the additional restoring force, the actuating handle could still be displaced in the same direction of rotation. However, although the actuating handle is in the fixing position, the butterfly valve could not assume the desired flap position, so that so that the butterfly valve in the open position does not rest against the stop and thus would vibrate.
- the butterfly valve for example, in manufacturing tolerances, as they may occur, for example, consisting of several components transmission mechanisms is aligned in the open position to a parallel to the flow direction and on the other rests against the stop.
- the release device may be, for example, a bolt guided in a tube, whose one end projects into the housing and whose other end terminates in a recess in the region of the housing wall.
- the bolt is clamped against a restoring force generated by a spring and fixed in the tensioned state by means of a fused solder located in the housing.
- a projection attached to the back of the actuating handle can engage.
- the bolt is automatically displaced by the spring to some extent to the outside.
- the projection of the actuating handle is pressed out of the recess and the actuating handle and thus also the butterfly valve pivoted into the closed position.
- the additional restoring force may be greater than the restoring force to be applied for shifting the shut-off valve from its closed position into its open position. This is useful if, for example, the restoring force acts, on the one hand, on the housing of the fire damper and, on the other hand, on the intermediate element.
- the additional restoring force may be less than or equal to the restoring force to be applied to shift the butterfly valve from its closed position to its open position. Also, the additional restoring force may be greater than the restoring force to be applied to shift the butterfly valve from its closed position to its open position.
- the additional restoring force is in any case at least so great that the fire damper in the open position always rests against the stop, so that it does not come to unwanted vibrations.
- the pivot axis of the butterfly valve and the axis of rotation of the actuating handle may be concentric or aligned with each other, in particular in one piece.
- the actuating handle may be connected with a positive connection with the axis of rotation, wherein the form-fitting has game and the use of this game is not yet released by the additional restoring force.
- the axis of rotation may have a quadrangular cross-section.
- the actuating handle preferably has a recess with four corners, wherein each edge portion of the recess between the center and a corner is widened, so that the actuating handle against the axis of rotation game.
- an intermediate element may for example be provided a slip clutch.
- the intermediate element may comprise at least one spring whose one end acts indirectly or directly on the axis of rotation, for example on at least a portion of the intermediate element, and the other end indirectly or directly on the actuating handle, wherein the intermediate element is arranged rotationally fixed relative to the axis of rotation.
- the intermediate element comprises at least one bearing surface, a corresponding counter bearing and at least one spring, wherein the axis of rotation at least one laterally opposite the axis of rotation projecting, the axis of rotation facing bearing surface on which the one end of, preferably designed as a compression spring and supported tangentially with respect to the axis of rotation aligned spring, and the actuating handle for the other end of the spring has the corresponding abutment.
- the bearing surface is rotationally fixed on or arranged opposite to the axis of rotation, while the actuating handle has a play relative to the axis of rotation.
- the counter bearing may also be part of a recess which is provided on the actuating handle and in which the spring in question is mounted.
- a, preferably the actuating handle in the region of the axis of rotation from the outside overlapping, rotatably connected to the axis of rotation element may be provided, which has at least one, at least one bearing surface forming, side part.
- the bearing surface serves as a bearing for a spring.
- the intermediate element may be at least one resilient, d. H. elastically formed, area, wherein the intermediate member rotatably on or opposite to the axis of rotation is arranged and the resiliently formed area indirectly or directly, in particular laterally, acts on the actuating handle.
- the operating handle has in this embodiment a game against the axis of rotation.
- At least one region is formed as a radially extending, arm-like projection formed in relation to the axis of rotation, the free end cooperating with a recess associated with the actuating handle.
- each projection is changed depending on the applied force by the elastic configuration at least in a partial area in its configuration, so that the relative arrangement of the intermediate element relative to the operating handle can change.
- the intermediate element may have two mutually pioneering, radially extending, arm-like projections, wherein the free end of each projection cooperates with a recess associated with the actuating handle.
- the intermediate element is designed as a torsion enabling element which is on the one hand rotatably connected to the rotational axis and on the other hand rotatably connected to the actuating handle.
- a torsion enabling element which is on the one hand rotatably connected to the rotational axis and on the other hand rotatably connected to the actuating handle.
- such an intermediate element is formed resiliently twisting.
- the actuating handle against a restoring force with respect to the housing at least in the region of its free end can be slightly raised relative to the housing.
- At least one stop can be arranged on the inside of the housing.
- a stop for example, be attached to the inside of the housing an angle.
- a transmission mechanism acting on the shut-off flap may be provided in the housing and for at least one stop to be arranged on the shut-off flap and / or on the transmission mechanism, preferably on the side of the transmission mechanism facing the shut-off flap.
- Fig. 1 to 7 a total of seven embodiments of a fire damper according to the invention are shown.
- Each fire damper has a housing 1 with a centrally in relation to the housing cross-section, between an open position and a closed position about a pivot axis 23 pivotally mounted around the butterfly valve 2.
- an actuating handle 4 is provided on the outside of the housing 1, which is rotatably mounted about a rotation axis 5.
- the operating handle 4 has in the embodiments of the FIGS. 1 to 4 on the back in the region of its free end a projection projecting back on the back 6.
- the projection 6 laterally opposite to the outer contour of the operating handle 4.
- the coil spring 3 is guided around the outside of the rotation axis 5 in the illustrated embodiment.
- the pivot axis 23 of the butterfly valve 2 and the axis of rotation 5 of the operating handle 4 are separate components.
- the butterfly valve 2 is connected via a non-illustrated, arranged in the interior of the housing 1 transmission mechanism 24 with the axis of rotation 5.
- the transmission mechanism 24 has a rotary bearing 25 provided on the shut-off flap 2 and a coupling rod 26 connected directly or indirectly to the rotation axis 5.
- a stop 7 is provided, on which the butterfly valve 2 rests directly in its open position.
- the stopper 7 is disposed respectively on the inside of the housing 1.
- the stopper 7 is arranged on the shut-off valve 2 or on the transmission mechanism 24, for example on the side of the coupling rod 26 facing the shut-off flap 2.
- the butterfly valve 2 and the coupling rod 26 are aligned approximately parallel, wherein the stop 7 prevents further pivoting of the butterfly valve 2 beyond the open position addition.
- the housing 1 may, for example, have a round or a rectangular housing cross-section.
- the height of the housing 1 is shown smaller in the figures than in the length of the housing 1. In practice, either the height compared to the length of the housing 1 is greater or the length compared to the height of the housing 1 is smaller, so that in the open position, the butterfly valve 2 abuts against the stop 7.
- a release device 8, not shown, is provided.
- the triggering device 8 comprises a arranged in the region of the housing recess 9, in which a bolt, not shown, is guided.
- the projection 6 In the open position, d. H. in the fixing position of the operating handle 4, the projection 6 is in the recess 9.
- the bolt In case of fire, the bolt is automatically displaced by a spring to a certain extent from the recess 9 to the outside, whereby the projection 6 of the operating handle 4 is pressed out of the recess 9 and the butterfly valve 2 and thus also the operating handle 4 by the restoring force generated by the coil spring 3 in the closed position, d. H. in the release position of the operating handle 4, is pivoted.
- FIGS. 1 to 4 is additionally provided on the outside of the housing 1, a blocking element 10 in the form of a bolted sheet.
- the free end is arranged at a distance from the housing 1.
- the blocking element 10 after Fig. 1e still has a slot 11. In the closed position of the butterfly valve 2 protrudes the projection 6 of the operating handle 4 in the embodiment Fig. 1 in the slot 11 inside.
- the butterfly valve 2 are moved from its closed position into its open position against the restoring force generated by the coil spring 3, the operating handle 4 in the region of its free end must first be slightly raised relative to the housing 1 against the direction of the arrow 12. As a result, the operating handle 4 is displaced from the slot 11 and can be moved by the blocking element 10 when rotated in the direction of the arrow 13, so that the actuating handle 4 can be rotated in the direction of the arrow 13.
- a first embodiment is shown, in which an intermediate element 14 between the actuating handle 4 and the axis of rotation 5 is arranged.
- the intermediate element 14, which is arranged rotationally fixed relative to the axis of rotation 5, in the illustrated embodiment comprises a total of two springs 15, wherein one end of each spring 15 act directly on the axis of rotation 5 and the other end directly on the operating handle 4.
- an operating handle 4 in the region of the axis of rotation 5 from the outside overlapping, rotatably connected to the axis of rotation 5 connected element 16 is provided, which has two mutually spaced side parts 17.
- Each side member 17 forms two bearing surfaces 18.
- the other end of each spring 15 acts laterally on the corresponding abutment 19 of the actuating handle 4.
- each abutment 19 for fixing the corresponding spring 15 in a recess 20 of the actuating handle 4 is provided.
- the butterfly valve 2 In the in the Fig. 1b to 1g shown position, the butterfly valve 2 is already in its open position, since it already has contact with the stopper 7. However, the projection 6 of the actuating handle 4 can not yet interact with the recess 9 of the triggering device 8. In order to overcome the remaining remaining distance, the operating handle 4 is further rotated in the same direction of rotation (arrow 13), overcoming the additional restoring force exerted by the two springs 15.
- the rotation axis 5 has a quadrangular cross section.
- a recess is also provided with four corners.
- each edge portion 21 of the recess between the center and a corner is expanded by the angle ⁇ , so that the operating handle 4 with respect to the axis of rotation has 5 game.
- Fig. 1f the projection 6 of the actuating handle 4 is fixed in the recess 9 of the triggering device 8. It can be clearly seen that the orientation of the intermediate element 14 relative to the actuating handle 4 after Fig. 1c towards the direction Fig. 1f changed Has. Fig. 1c displays an enlargement of the corresponding area Fig. 1d wherein the element 16 is shown in section.
- FIG. 2a to 2g a second embodiment of an intermediate element 14 is shown.
- the intermediate element 14 is non-rotatably arranged on the axis of rotation 5 and has two spaced-apart resiliently formed regions 22, each resiliently formed region 22 acts laterally on the actuating handle 4 arranged therebetween.
- the operation is identical as in the embodiment of Fig. 1 ,
- the additional restoring force is in the in the Fig. 2a to 2g illustrated embodiment of the two spaced-apart resiliently formed regions 22.
- the resilient regions 22 are preferably part of a common component, the rotationally fixed is attached to the axis of rotation 5.
- the component for example, a quadrangular recess through which the axis of rotation 5 is guided.
- a third embodiment is shown, which has the same operation.
- a torsion-enabling element which consists for example of plastic, is provided, one end of which is non-rotatable with the axis of rotation 5 and whose other end is non-rotatable with the actuating handle 4 connected is.
- the further structural design for example with respect to the realization of the game between the operating handle 4 and the axis of rotation 5, is substantially the same as in the embodiments described above.
- a fourth embodiment is shown.
- the intermediate element 14 in turn rotatably relative to the axis of rotation 5 is arranged.
- the intermediate element 14 is made of plastic, for example. It has a resiliently formed region 22, which acts laterally on the actuating handle 4.
- the actuating handle 4 is in turn so connected to the axis of rotation 5 in a positive connection that the positive engagement has game and the use of this game by the additional restoring force exerted by the resilient portion 22 is released.
- a fifth embodiment of an intermediate element 14 is shown.
- the intermediate element 14 is in turn arranged rotationally fixed relative to the axis of rotation 5 and has two regions 22.
- Each region 22 is formed as a radially extending, arm-like projection 27 with respect to the axis of rotation 5.
- the free end of a projection 27 cooperates with a recess 28 associated with the actuating handle 4.
- the two projections 27 face away from each other, since they are arranged on opposite sides with respect to the axis of rotation 5.
- the intermediate element 14 and the projections 27 may be formed integrally, for example. At least the projections 27 are made of an elastic and resilient material, such as plastic. Like for example the FIGS. 5a and 5f can be seen, the actuating handle 4 on the inside, the two opposite recesses 28. Each recess 28 serves to receive a projection 27.
- the axis of rotation 5 has a quadrangular cross-section.
- the actuating handle 4 itself also has a recess with four corners. Through the recess, the quadrangular axis of rotation 5 is guided. However, as is evident in Fig. 5c shown, each edge portion 21 of the recess between the center and a corner widened by the angle ⁇ , so that the actuating handle 4 with respect to the axis of rotation has 5 game.
- the butterfly valve 2 In the in the Fig. 5c and 5d shown position, the butterfly valve 2 is already in its open position, since it is in contact with the stopper 7. However, the projection 6 of the actuating handle 4 can not yet interact with the recess 9 of the triggering device 8. In order to overcome the remaining remaining distance, the operating handle 4 must continue in the same direction of rotation (arrow 13), overcoming the restoring force and the additional restoring force, the elastic deformation of the two projections 27 in the in Fig. 5f shown position must be applied to be rotated.
- Fig. 5f and 5g the projection 6 of the actuating handle 4 is fixed in the recess 9 of the triggering device 8. It can clearly be seen that the orientation of the projections 27 of the intermediate element 14 relative to the actuating handle 4 of Fig. 5d towards the alignment in the Fig. 5f and 5g has changed.
- Fig. 5c displays an enlargement of the corresponding area Fig. 5d , wherein the area of the operating handle 4, in which the intermediate element 14 is located, is shown cut.
- the projection 6 can interact with the triggering device 8 - as it is for example in Fig. 5f is shown, the actuating handle 4, overcoming the restoring force and the additional restoring force exerted by the two resilient projections 27, must be further rotated.
- the operating handle 4 and the intermediate member 14 are formed in two parts. But it is also quite possible that the actuating handle 4 and the intermediate element 14 are integrally formed. In the latter embodiment, at least the projections 27 are then made of a material which has resilient elastic properties and allows the above-described operation.
- FIGS. 5a to 5g has the triggering device 8 on a run-on slope 29, with the operating handle 4 is partially in contact with its underside.
- the operating handle 4 Upon rotation of the operating handle 4 in the direction of arrow 13, the operating handle 4 by the run-on slope 29 against a spring force and raised against the direction of the arrow 12, ie moved away from the housing 1.
- the recess 9 the operating handle 4 is shifted back by the spring force in the direction of the arrow 12 and engages in the recess 9 a.
- the additional restoring force can either be equal to, greater or less than the restoring force to be applied for shifting the shut-off valve 2 from its closed position to its open position.
- the one end of the coil spring 3 used in each case interacts with the housing 1 and the other end with the actuating handle 4.
- the additional restoring force may be greater than or less than the restoring force or equal to the restoring force.
- FIGS. 6a to 6c show yet another embodiment, in which as an intermediate element 14, a torsion enabling element, which consists for example of plastic, is provided.
- One surface of the intermediate element 14 is secured against rotation by a connecting plate 32 with the axis of rotation 5.
- the opposite other surface of the intermediate element 14 is rotatably connected to the actuating handle 4.
- the coil spring 3 acts between the housing 1 and the connecting plate 32nd
- FIG. 7a and 7b another embodiment is shown.
- the operating handle 4 which consists for example of plastic, is integral with the intermediate element 14 trained.
- the intermediate element 14 has two corrugated areas, between which a quadrangular recess 30 for receiving the quadrangular axis of rotation, not shown, is arranged.
- the intermediate element 14 is arranged rotationally fixed on the axis of rotation 5.
- At least the corrugated areas of the intermediate element 14 consist of an elastically deformable and resilient material, so that in this way the additional restoring force is generated.
- the restoring force generating spring This may be, for example, a coil spring, which is arranged under the operating handle 4 and whose one end cooperates with the housing 1 and the other end with the actuating handle 4.
- the actuating handle 4 has a receptacle 31, through which the quadrangular axis of rotation 5 is guided. However, this receptacle 31 is widened, so that the operating handle 4 with respect to the axis of rotation has 5 game. Only when the additional restoring force has been applied, which is overcome by the expansion of the receptacle 31 relative to the axis of rotation 5 game overcome and there is a positive connection between the operating handle 4 and the axis of rotation 5.
- the actuating handle 4 has a region, not shown, with a also not shown triggering device 8 cooperates.
- each intermediate element 14 consists of two, a torsion enabling elements, which consist for example of plastic.
- the one end of each element is non-rotatable with the actuating handle 4 and the the other end of each element is rotatably connected via a connecting plate 32 with the axis of rotation 5.
- the actuating handle 4 has a recess 33, through which the axis of rotation 5 is guided.
- the recess 33 is so large that upon rotation of the operating handle 4, the rotation axis 5 is not rotated by an interaction of recess 33 and rotation axis 5.
- the operating handle 4 has no direct connection to the axis of rotation 5.
- the restoring force generated by the coil spring 3 acts between the housing 1 and the operating handle 4.
- the restoring force generated by the coil spring 3 is "inoperative" because the operating handle 4 locks is.
- the additional restoring force presses the butterfly valve 2 against the stop 7.
- the additional restoring force can be greater than or less than the restoring force or equal to the restoring force.
- the spiral spring 3 acts between the housing 1 and the connecting plate 32. So that the butterfly valve 2 rests in its open position on the stop 7, the additional restoring force must be at least equal to the restoring force or greater than the restoring force.
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- General Engineering & Computer Science (AREA)
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Description
Die Erfindung betrifft eine Brandschutzklappe mit einem Gehäuse und mit einer darin, insbesondere mittig auf den Gehäusequerschnitt bezogen, zwischen einer Offenstellung und einer Schließstellung um eine Schwenkachse herum verschwenkbar gelagerten Absperrklappe, wobei zum Verschwenken, d. h. zum Spannen, der Absperrklappe aus ihrer Schließstellung gegen die Rückstellkraft in ihre Offenstellung ein unmittelbar oder mittelbar mit der Absperrklappe zusammenwirkender und auf der Außenseite des Gehäuses angeordneter, um eine ihm zugeordnete Drehachse drehbarer Betätigungsgriff vorgesehen ist, wobei zumindest ein Anschlag vorgesehen ist, an dem die Absperrklappe in ihrer Offenstellung unmittelbar oder mittelbar anliegt, und wobei die Brandschutzklappe eine Auslöseeinrichtung, die in eine Fixierposition bringbar und durch Hitze oder dergleichen, beispielsweise im Brandfall, auslösbar und damit automatisch in eine Freigabeposition verlagerbar ist, aufweist und wobei der Betätigungsgriff und damit die mit ihm verbundene Absperrklappe in der Offenstellung gegen eine Rückstellkraft mittels der in ihrer Fixierposition befindlichen Auslöseeinrichtung in eine der Offenstellung der Absperrklappe entsprechende Position fixierbar ist und aus dieser Position, beispielsweise im Brandfall, nach Auslösen der Auslöseeinrichtung und damit erfolgender Änderung der Auslöseeinrichtung in ihre Freigabeposition durch die Rückstellkraft in eine der Schließstellung der Absperrklappe entsprechende zweite Position verschwenkbar ist. Aus der
Aufgabe der Erfindung ist es, die vorgenannten Nachteile zu vermeiden und eine Brandschutzklappe anzugeben, bei der in der Offenstellung die Absperrklappe möglichst parallel zur Strömungsrichtung ausgerichtet ist.
Diese Aufgabe wird dadurch gelöst, dass entweder das Material des Betätigungsgriffes und/oder ein zwischen dem Betätigungsgriff und der Drehachse angeordnetes Zwischenelement derart ausgebildet ist (sind), dass ein weiteres Verlagern über die Offenstellung der Absperrklappe hinaus, insbesondere Verdrehen, des mit der Auslöseeinrichtung zusammenwirkenden Teils des Betätigungsgriffes in die gleiche Drehrichtung unter Überwindung einer nach erfolgtem Verriegeln auf die Absperrklappe wirkenden und die Absperrklappe gegen den Anschlag drückenden, Zusatzrückstellkraft möglich ist.The invention relates to a fire damper with a housing and with a, in particular centrally on the housing cross section, between an open position and a closed position about a pivot axis pivotally mounted shut-off valve, wherein for pivoting, ie for clamping, the shut-off valve from its closed position against the restoring force in its open position a directly or indirectly cooperating with the shut-off valve and arranged on the outside of the housing to an associated rotary axis rotatable actuating handle is provided, wherein at least one stop is provided, against which the butterfly valve in its open position directly or indirectly abuts, and wherein the fire damper a triggering device, which can be brought into a fixing position and by heat or the like, for example in case of fire, triggered and thus automatically displaced into a release position, and wherein the Betätigungsgrif f and thus connected to it the shut-off valve in the open position against a restoring force by means of the release device located in its fixing position in a position corresponding to the open position of the butterfly valve position and from this position, for example in case of fire, after triggering the triggering device and thus successful change of the triggering device in its release position by the restoring force in a closed position of the shut-off valve corresponding second position is pivotable. From the
The object of the invention is to avoid the aforementioned disadvantages and to provide a fire damper, wherein in the open position, the butterfly valve is aligned as parallel as possible to the flow direction.
This object is achieved in that either the material of the actuating handle and / or arranged between the actuating handle and the axis of rotation intermediate element is (are) designed such that a further displacement beyond the open position of the butterfly valve, in particular twisting, cooperating with the triggering device Part of the operating handle in the same direction of rotation, overcoming a after locking done on the butterfly valve and the butterfly valve pressing against the stop, additional restoring force is possible.
Die erfindungsgemäße Ausgestaltung erlaubt, dass der Anschlag bereits werksseitig so an der gewünschten Stelle auf der Innenseite des Gehäuses montiert werden kann, dass die Absperrklappe im anliegenden Zustand in jedem Fall parallel zur Strömungsrichtung ausgerichtet ist. Dies ist durch das Material des Betätigungsgriffes und/oder durch ein zwischen dem Betätigungsgriff und der Drehachse bzw. der Absperrklappe angeordnetes Zwischenelement möglich.The embodiment of the invention allows that the stop can already be factory mounted so at the desired location on the inside of the housing, that the butterfly valve is aligned in the applied state in each case parallel to the flow direction. This is possible by the material of the actuating handle and / or by an intermediate element arranged between the actuating handle and the axis of rotation or the butterfly valve.
Bei der erfindungsgemäßen Brandschutzklappe wirkt die Rückstellkraft zwischen dem Gehäuse der Brandschutzklappe und dem Betätigungsgriff oder zwischen dem Gehäuse der Brandschutzklappe und dem Zwischenelement.In the fire damper according to the invention the restoring force acts between the housing of the fire damper and the operating handle or between the housing of the fire damper and the intermediate element.
Sofern das Material des Betätigungsgriffes derart ausgebildet ist, dass durch das Material selbst ein weiteres Verlagern über die Offenstellung der Absperrklappe hinaus möglich ist, wird die Zusatzrückstellkraft durch dieses Material erzeugt. Bei dem Material kann es sich beispielsweise um ein Elastomer oder ein tortierbares Metall handeln, das beispielsweise zwischen dem Ende der Drehachse und dem Betätigungsgriff angeordnet ist.If the material of the actuating handle is designed such that a further displacement beyond the open position of the butterfly valve is possible by the material itself, the additional restoring force is generated by this material. The material may be, for example, an elastomer or a torturous metal, which is arranged, for example, between the end of the axis of rotation and the actuating handle.
Sofern zwischen dem Betätigungsgriff und der Drehachse ein Zwischenelement angeordnet ist, wirkt die Zusatzrückstellkraft zwischen dem Zwischenelement und dem Betätigungsgriff. In diesem Fall kann das Zwischenelement drehfest gegenüber der Absperrklappe oder gegenüber der Drehachse, mit der die Absperrklappe verbunden ist, angeordnet sein.If an intermediate element is arranged between the actuating handle and the axis of rotation, the additional restoring force acts between the intermediate element and the actuating handle. In this case, the intermediate element can be arranged rotationally fixed relative to the butterfly valve or with respect to the axis of rotation with which the butterfly valve is connected.
Unter der Offenstellung der Absperrklappe wird die Stellung der Absperrklappe verstanden, in der die Absperrklappe am Anschlag anliegt. Bis zum Zeitpunkt der Verriegelung wirkt die Zusatzrückstellkraft gegen die Verlagerung des Betätigungsgriffes in seine der Offenstellung der Absperrklappe entsprechende Position.Under the open position of the butterfly valve, the position of the butterfly valve is understood, in which the butterfly valve abuts the stop. Until the time of locking the additional restoring force acts against the displacement of the actuating handle in its the open position of the butterfly valve corresponding position.
Sofern beispielsweise die Rückstellkraft einerseits an dem Gehäuse der Brandschutzklappe und andererseits an dem Betätigungsgriff angreift, ist im verriegelten Zustand der Absperrklappe die Rückstellkraft, die beispielsweise von einer Spiralfeder erzeugt wird, "außer Betrieb", da der Betätigungsgriff verriegelt ist. In diesem Zustand ist jedoch die Zusatzrückstellkraft noch "aktiv", da die Zusatzrückstellkraft die Absperrklappe gegen den Anschlag drückt. Daher ist zumindest in dieser Stellung der Absperrklappe die Zusatzrückstellkraft größer als die Reibkraft, die zwischen der Innenseite des Gehäuses und der Absperrklappe wirkt.For example, if the restoring force engages on the one hand on the housing of the fire damper and on the other hand on the operating handle, the restoring force, which is generated for example by a coil spring, is "out of service" in the locked state of the butterfly valve, since the operating handle is locked. In this state, however, the additional restoring force is still "active" because the additional restoring force presses the butterfly valve against the stop. Therefore, at least in this position of the butterfly valve, the additional restoring force is greater than the frictional force acting between the inside of the housing and the butterfly valve.
Durch die erfindungsgemäße Ausgestaltung kann der Betätigungsgriff noch über den Punkt hinaus, in dem die Absperrklappe bereits mit dem Anschlag in Kontakt kommt, in die gleiche Drehrichtung weiterbewegt werden. Die Zusatzrückstellkraft ist zumindest so groß, dass die Brandschutzklappe in der Offenstellung immer an dem Anschlag anliegt, so dass es nicht zu unerwünschten Vibrationen kommt.By virtue of the embodiment according to the invention, the actuating handle can still be moved beyond the point at which the shut-off flap already comes into contact with the stop in the same direction of rotation. The additional restoring force is at least so great that the fire damper in the open position always rests against the stop, so that it does not come to unwanted vibrations.
Der Betätigungsgriff und/oder das Zwischenelement kann(können) aus einem geeigneten Material, wie beispielsweise einem Kunststoff, bestehen. Durch die daraus resultierende elastische Verbiegung ist die vorbeschriebene Verlagerung des Betätigungsgriffes möglich. Alternativ oder auch in Ergänzung kann(können) der Betätigungsgriff und/oder das Zwischenelement zumindest eine lokale Schwächung, beispielweise in Form einer Einkerbung oder Einschnürung aufweisen, die die vorbeschriebene Verlagerung ermöglichen.The actuating handle and / or the intermediate element may (may) consist of a suitable material, such as a plastic. Due to the resulting elastic bending the above-described displacement of the operating handle is possible. Alternatively or in addition can (can) the operating handle and / or the intermediate element at least one local weakening, for example in the form of a notch or constriction, which allow the above-described displacement.
In der Schließstellung ist die Absperrklappe über ihren Umfang mit der Innenseite des Gehäuses in Kontakt. Insoweit sind zu Beginn des Verschwenkens aus ihrer Schließstellung in ihre Offenstellung die höchsten Reibkräfte, die durch den Kontakt zwischen der Absperrklappe und der Innenseite des Gehäuses resultieren, zu überwinden.In the closed position, the butterfly valve is in contact with the inside of the housing over its circumference. In that regard, at the beginning of the pivoting from its closed position to its open position, the highest frictional forces resulting from the contact between the butterfly valve and the inside of the housing to overcome.
Mit zunehmendem Verschwenken in die Offenstellung reduzieren sich die Reibkräfte. Dieser Effekt tritt insbesondere bei rechteckigen Brandschutzklappen auf, bei denen die zwei seitlichen Teilflächen des Gehäuses, die orthogonal zur Schwenkachse bzw. Drehachse ausgerichtet sind, innenseitig vorstehen. Dieses nach innen Vorstehen des Gehäuses schafft einen seitlichen Freigang für die Absperrklappe, so dass sich der Kontaktbereich in der Offenstellung der Absperrklappe auf jeder Seite der Absperrklappe auf die Breite des nach innen vorstehenden Bereichs beschränkt.With increasing pivoting in the open position reduce the frictional forces. This effect occurs in particular in the case of rectangular fire dampers, in which the two lateral partial surfaces of the housing, which are oriented orthogonally to the pivot axis or axis of rotation, protrude on the inside. This inwardly projecting of the housing creates a lateral clearance for the butterfly valve, so that the contact area in the open position of the butterfly valve on each side of the butterfly valve is limited to the width of the inwardly projecting region.
Die auftretenden Reibkräfte dürfen in dem Bereich, wenn die Absperrklappe ihre Offenstellung erreicht hat oder wenn sich die Absperrklappe kurz vor Erreichen ihrer Offenstellung befindet, zumindest die Zusatzrückstellkraft nicht übersteigen. Wären die Reibkräfte in diesem Bereich größer beispielsweise als die Zusatzrückstellkraft, könnte zwar der Betätigungsgriff weiter in die gleiche Drehrichtung verlagert werden. Allerdings könnte - obwohl sich der Betätigungsgriff in der Fixierposition befindet - die Absperrklappe nicht die gewünschte Klappenstellung annehmen, so dass damit die Absperrklappe in der Offenstellung nicht an dem Anschlag anliegen und damit vibrieren würde.The frictional forces occurring in the area, when the butterfly valve has reached its open position or when the butterfly valve is close to reaching its open position, may not exceed at least the additional restoring force. If the frictional forces in this area were greater than, for example, the additional restoring force, the actuating handle could still be displaced in the same direction of rotation. However, although the actuating handle is in the fixing position, the butterfly valve could not assume the desired flap position, so that so that the butterfly valve in the open position does not rest against the stop and thus would vibrate.
Aufgrund der erfindungsgemäßen Ausgestaltung ist sichergestellt, dass die Absperrklappe auch beispielsweise bei Fertigungstoleranzen, so wie sie beispielsweise bei aus mehreren Bauteilen bestehenden Übertragungsmechanismen auftreten können, in der Offenstellung zum einen parallel zur Strömungsrichtung ausgerichtet ist und zum anderen an dem Anschlag anliegt.Due to the design of the invention it is ensured that the butterfly valve, for example, in manufacturing tolerances, as they may occur, for example, consisting of several components transmission mechanisms is aligned in the open position to a parallel to the flow direction and on the other rests against the stop.
Bei der Auslöseeinrichtung kann es sich beispielsweise um einen in einem Rohr geführten Bolzen handeln, dessen eines Ende in das Gehäuse hineinragt und dessen anderes Ende in einer Ausnehmung im Bereich der Gehäusewandung endet. Der Bolzen ist gegen eine durch eine Feder erzeugte Rückstellkraft gespannt und im gespannten Zustand mittels eines in dem Gehäuse befindlichen Schmelzlotes fixiert. In der Offenstellung der Absperrklappe kann beispielsweise in die Ausnehmung im Bereich der Gehäusewandung ein rückseitig an dem Betätigungsgriff angebrachter Vorsprung einrasten. Im Brandfall schmilzt das Schmelzlot, so dass infolgedessen der Bolzen automatisch durch die Feder in einem gewissen Maße nach außen verlagert wird. Hierdurch wird der Vorsprung des Betätigungsgriffes aus der Ausnehmung gedrückt und der Betätigungsgriff und damit auch die Absperrklappe in die Schließstellung verschwenkt.The release device may be, for example, a bolt guided in a tube, whose one end projects into the housing and whose other end terminates in a recess in the region of the housing wall. The bolt is clamped against a restoring force generated by a spring and fixed in the tensioned state by means of a fused solder located in the housing. In the open position of the butterfly valve, for example, in the recess in the region of the housing wall, a projection attached to the back of the actuating handle can engage. In case of fire, the melting solder melts, so that as a result, the bolt is automatically displaced by the spring to some extent to the outside. As a result, the projection of the actuating handle is pressed out of the recess and the actuating handle and thus also the butterfly valve pivoted into the closed position.
Dabei kann die Zusatzrückstellkraft größer sein als die zur Verlagerung der Absperrklappe aus ihrer Schließstellung in ihre Offenstellung aufzubringende Rückstellkraft. Dies bietet sich an, wenn beispielsweise die Rückstellkraft einerseits an dem Gehäuse der Brandschutzklappe und andererseits an dem Zwischenelement angreift.In this case, the additional restoring force may be greater than the restoring force to be applied for shifting the shut-off valve from its closed position into its open position. This is useful if, for example, the restoring force acts, on the one hand, on the housing of the fire damper and, on the other hand, on the intermediate element.
Sofern beispielsweise die Rückstellkraft einerseits an dem Gehäuse der Brandschutzklappe und andererseits an dem Betätigungsgriff angreift, kann die Zusatzrückstellkraft auch kleiner oder gleich als die zur Verlagerung der Absperrklappe aus ihrer Schließstellung in ihre Offenstellung aufzubringende Rückstellkraft sein. Auch kann die Zusatzrückstellkraft größer als die zur Verlagerung der Absperrklappe aus ihrer Schließstellung in ihre Offenstellung aufzubringende Rückstellkraft sein. Die Zusatzrückstellkraft ist in jedem Fall zumindest so groß, dass die Brandschutzklappe in der Offenstellung immer an dem Anschlag anliegt, so dass es nicht zu unerwünschten Vibrationen kommt.For example, if the restoring force on the one hand acts on the housing of the fire damper and on the other hand on the operating handle, the additional restoring force may be less than or equal to the restoring force to be applied to shift the butterfly valve from its closed position to its open position. Also, the additional restoring force may be greater than the restoring force to be applied to shift the butterfly valve from its closed position to its open position. The additional restoring force is in any case at least so great that the fire damper in the open position always rests against the stop, so that it does not come to unwanted vibrations.
Die Schwenkachse der Absperrklappe und die Drehachse des Betätigungsgriffes können konzentrisch oder miteinander fluchtend, insbesondere einteilig, ausgebildet sein.The pivot axis of the butterfly valve and the axis of rotation of the actuating handle may be concentric or aligned with each other, in particular in one piece.
Der Betätigungsgriff kann mit einem Formschluss mit der Drehachse verbunden sein, wobei der Formschluss Spiel hat und die Nutzung dieses Spiels durch die Zusatzrückstellkraft noch nicht freigegeben ist. So kann beispielsweise die Drehachse einen viereckigen Querschnitt aufweisen. Bei einer solchen Ausführungsform hat der Betätigungsgriff vorzugsweise eine Ausnehmung mit vier Ecken, wobei jeder Randabschnitt der Ausnehmung zwischen der Mitte und einer Ecke aufgeweitet ist, so dass der Betätigungsgriff gegenüber der Drehachse Spiel hat. Bei Verdrehen des Betätigungsgriffes in Drehrichtung wird das Spiel zwischen der Drehachse und der Ausnehmung in dem Betätigungsgriff überwunden. Ist das Spiel infolge des Verdrehens des Betätigungsgriffes in Drehrichtung gesehen überwunden, entsteht ein Formschluss zwischen der Ausnehmung des Betätigungsgriffs und der Drehachse.The actuating handle may be connected with a positive connection with the axis of rotation, wherein the form-fitting has game and the use of this game is not yet released by the additional restoring force. For example, the axis of rotation may have a quadrangular cross-section. In such an embodiment, the actuating handle preferably has a recess with four corners, wherein each edge portion of the recess between the center and a corner is widened, so that the actuating handle against the axis of rotation game. Upon rotation of the actuating handle in the direction of rotation, the play between the axis of rotation and the recess in the operating handle is overcome. If the game overcome as a result of the rotation of the actuating handle in the direction of rotation, creates a positive connection between the recess of the actuating handle and the axis of rotation.
Als Zwischenelement kann beispielsweise eine Rutschkupplung vorgesehen sein.As an intermediate element may for example be provided a slip clutch.
Alternativ kann das Zwischenelement zumindest eine Feder umfassen, deren eines Ende mittelbar oder unmittelbar auf die Drehachse, beispielsweise auf zumindest einen Teilbereich des Zwischenelementes, und deren anderes Ende mittelbar oder unmittelbar auf den Betätigungsgriff wirkt, wobei das Zwischenelement drehfest gegenüber der Drehachse angeordnet ist.Alternatively, the intermediate element may comprise at least one spring whose one end acts indirectly or directly on the axis of rotation, for example on at least a portion of the intermediate element, and the other end indirectly or directly on the actuating handle, wherein the intermediate element is arranged rotationally fixed relative to the axis of rotation.
Es bietet sich an, wenn das Zwischenelement zumindest eine Lagerfläche, ein korrespondierendes Gegenlager sowie zumindest eine Feder umfasst, wobei die Drehachse wenigstens eine seitlich gegenüber der Drehachse vorstehende, der Drehachse zugewandte Lagerfläche, an der sich das eine Ende der, vorzugsweise als Druckfeder ausgebildeten und tangential in Bezug auf die Drehachse ausgerichteten Feder abstützt, aufweist und der Betätigungsgriff für das andere Ende der Feder das korrespondierende Gegenlager aufweist. Die Lagerfläche ist drehfest auf bzw. gegenüber der Drehachse angeordnet, während der Betätigungsgriff ein Spiel gegenüber der Drehachse hat. Das Gegenlager kann auch Teil einer Ausnehmung sein, die an dem Betätigungsgriff vorgesehen ist und in der die betreffende Feder gelagert ist.It makes sense if the intermediate element comprises at least one bearing surface, a corresponding counter bearing and at least one spring, wherein the axis of rotation at least one laterally opposite the axis of rotation projecting, the axis of rotation facing bearing surface on which the one end of, preferably designed as a compression spring and supported tangentially with respect to the axis of rotation aligned spring, and the actuating handle for the other end of the spring has the corresponding abutment. The bearing surface is rotationally fixed on or arranged opposite to the axis of rotation, while the actuating handle has a play relative to the axis of rotation. The counter bearing may also be part of a recess which is provided on the actuating handle and in which the spring in question is mounted.
Dabei kann ein, vorzugsweise den Betätigungsgriff im Bereich der Drehachse von außen überdeckendes, drehfest mit der Drehachse verbundenes Element vorgesehen sein, das zumindest ein, wenigstens eine Lagerfläche bildendes, Seitenteil aufweist. Die Lagerfläche dient als Lager für eine Feder.In this case, a, preferably the actuating handle in the region of the axis of rotation from the outside overlapping, rotatably connected to the axis of rotation element may be provided, which has at least one, at least one bearing surface forming, side part. The bearing surface serves as a bearing for a spring.
Das Zwischenelement kann zumindest einen federnd ausgebildeten, d. h. elastisch ausgebildeten, Bereich aufweisen, wobei das Zwischenelement drehfest auf bzw. gegenüber der Drehachse angeordnet ist und der federnd ausgebildete Bereich mittelbar oder unmittelbar, insbesondere seitlich, auf den Betätigungsgriff wirkt. Der Betätigungsgriff hat bei diesem Ausführungsbeispiel ein Spiel gegenüber der Drehachse.The intermediate element may be at least one resilient, d. H. elastically formed, area, wherein the intermediate member rotatably on or opposite to the axis of rotation is arranged and the resiliently formed area indirectly or directly, in particular laterally, acts on the actuating handle. The operating handle has in this embodiment a game against the axis of rotation.
Dabei bietet es sich an, wenn zumindest ein Bereich als in Bezug auf die Drehachse sich radial erstreckender, armartig ausgebildeter Vorsprung ausgebildet ist, dessen freies Ende mit einer dem Betätigungsgriff zugeordneten Ausnehmung zusammenwirkt. Bei Verdrehen des Betätigungsgriffes wird jeder Vorsprung in Abhängigkeit der anliegenden Kraft durch die elastische Ausgestaltung zumindest in einem Teilbereich in seiner Ausgestaltung verändert, so dass sich die relative Anordnung des Zwischenelementes gegenüber dem Betätigungsgriff ändern kann.It is advisable if at least one region is formed as a radially extending, arm-like projection formed in relation to the axis of rotation, the free end cooperating with a recess associated with the actuating handle. Upon rotation of the actuating handle each projection is changed depending on the applied force by the elastic configuration at least in a partial area in its configuration, so that the relative arrangement of the intermediate element relative to the operating handle can change.
Das Zwischenelement kann zwei voneinander wegweisende, sich radial erstreckende, armartig ausgebildete Vorsprünge aufweisen, wobei das freie Ende jedes Vorsprungs mit einer dem Betätigungsgriff zugeordneten Ausnehmung zusammenwirkt.The intermediate element may have two mutually pioneering, radially extending, arm-like projections, wherein the free end of each projection cooperates with a recess associated with the actuating handle.
Es ist auch möglich, dass das Zwischenelement als ein eine Torsion ermöglichendes Element ausgebildet ist, das einerseits drehfest mit der Drehachse und andererseits drehfest mit dem Betätigungsgriff verbunden ist. Vorzugsweise ist ein solches Zwischenelement federnd tordierend ausgebildet.It is also possible that the intermediate element is designed as a torsion enabling element which is on the one hand rotatably connected to the rotational axis and on the other hand rotatably connected to the actuating handle. Preferably, such an intermediate element is formed resiliently twisting.
Bei einem bevorzugten Ausführungsbeispiel der Erfindung ist die an dem in der Offenstellung an zumindest einem Anschlag anliegende Absperrklappe parallel zur Strömungsrichtung ausgerichtet.In a preferred embodiment of the invention, which is aligned parallel to the flow direction at the abutting in the open position on at least one stop valve.
Zum Lösen oder Fixieren des Betätigungsgriffes gegenüber der Auslöseeinrichtung kann der Betätigungsgriff gegen eine Rückstellkraft in Bezug auf das Gehäuse zumindest im Bereich seines freien Endes leicht gegenüber dem Gehäuse anhebbar sein.For releasing or fixing the actuating handle relative to the triggering device, the actuating handle against a restoring force with respect to the housing at least in the region of its free end can be slightly raised relative to the housing.
Dabei kann zumindest ein Anschlag an der Innenseite des Gehäuses angeordnet sein. Als Anschlag kann beispielsweise an der Innenseite des Gehäuses ein Winkel angebracht sein.In this case, at least one stop can be arranged on the inside of the housing. As a stop, for example, be attached to the inside of the housing an angle.
Es ist auch möglich, dass in dem Gehäuses ein an der Absperrklappe angreifender Übertragungsmechanismus vorgesehen ist und dass zumindest ein Anschlag an der Absperrklappe und/oder an dem Übertragungsmechanismus, vorzugsweise auf der der Absperrklappe zugewandten Seite des Übertragungsmechanismusses, angeordnet ist.It is also possible for a transmission mechanism acting on the shut-off flap to be provided in the housing and for at least one stop to be arranged on the shut-off flap and / or on the transmission mechanism, preferably on the side of the transmission mechanism facing the shut-off flap.
Im Folgenden werden in den Zeichnungen dargestellte Ausführungsbeispiele der Erfindung erläutert. Es zeigen:
- Fig. 1a-g
- ein erstes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 2a-g
- ein zweites Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 3a-g
- ein drittes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 4a-h
- ein viertes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe und
- Fig. 5a-g
- ein fünftes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 6a-c
- ein sechstes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 7a+b
- ein siebtes Ausführungsbeispiel einer erfindungsgemäßen Brandschutzklappe,
- Fig. 8a
- eine Skizze zur Verdeutlichung eines ersten Wirkprinzips,
- Fig. 8b
- das Detail aus
Fig. 8a , - Fig. 9a
- eine Skizze zur Verdeutlichung eines alternativen Wirkprinzips und
- Fig. 9b
- das Detail aus
Fig. 9a .
- Fig. 1a-g
- A first embodiment of a fire damper according to the invention,
- Fig. 2a-g
- A second embodiment of a fire damper according to the invention,
- Fig. 3a-g
- A third embodiment of a fire damper according to the invention,
- Fig. 4a-h
- A fourth embodiment of a fire damper according to the invention and
- Fig. 5a-g
- A fifth embodiment of a fire damper according to the invention,
- Fig. 6a-c
- A sixth embodiment of a fire damper according to the invention,
- Fig. 7a + b
- A seventh embodiment of a fire damper according to the invention,
- Fig. 8a
- a sketch to illustrate a first principle of action,
- Fig. 8b
- the detail
Fig. 8a . - Fig. 9a
- a sketch to illustrate an alternative mode of action and
- Fig. 9b
- the detail
Fig. 9a ,
In allen Figuren werden für gleiche bzw. gleichartige Bauteile übereinstimmende Bezugszeichen verwendet.In all figures the same reference numerals are used for identical or similar components.
In den
Jede Brandschutzklappe weist ein Gehäuse 1 mit einer darin mittig auf den Gehäusequerschnitt bezogen, zwischen einer Offenstellung und einer Schließstellung um eine Schwenkachse 23 herum schwenkbar gelagerte Absperrklappe 2 auf.Each fire damper has a
Zum Verschwenken der Absperrklappe 2 aus ihrer Schließstellung gegen die durch eine Spiralfeder 3 erzeugte Rückstellkraft in ihre Offenstellung ist auf der Außenseite des Gehäuses 1 ein Betätigungsgriff 4 vorgesehen, der um eine Drehachse 5 drehbar gelagert ist. Der Betätigungsgriff 4 hat bei den Ausführungsbeispielen nach den
In den dargestellten Ausführungsbeispielen stellen die Schwenkachse 23 der Absperrklappe 2 und die Drehachse 5 des Betätigungsgriffes 4 separate Bauteile dar. Dabei ist die Absperrklappe 2 über einen nicht näher dargestellten, im Inneren des Gehäuses 1 angeordneten Übertragungsmechanismus 24 mit der Drehachse 5 verbunden. Der Übertragungsmechanismus 24 weist in den dargestellten Ausführungsbeispielen ein an der Absperrklappe 2 vorgesehenes Drehlager 25 sowie eine mittelbar oder unmittelbar mit der Drehachse 5 verbundene Koppelstange 26 auf.In the illustrated embodiments, the
In dem Gehäuse 1 ist ein Anschlag 7 vorgesehen, an dem die Absperrklappe 2 in ihrer Offenstellung unmittelbar anliegt. In den dargestellten Ausführungsbeispielen ist der Anschlag 7 jeweils an der Innenseite des Gehäuses 1 angeordnet. Es ist aber auch durchaus möglich, dass der Anschlag 7 an der Absperrklappe 2 bzw. an dem Übertragungsmechanismus 24, beispielsweise auf der der Absperrklappe 2 zugewandten Seite der Koppelstange 26, angeordnet ist. In der Offenstellung der Absperrklappe 2 sind die Absperrklappe 2 und die Koppelstange 26 in etwa parallel ausgerichtet, wobei der Anschlag 7 ein weiteres Verschwenken der Absperrklappe 2 über die Offenstellung hinaus verhindert.In the
Das Gehäuse 1 kann beispielsweise einen runden oder einen rechteckigen Gehäusequerschnitt aufweisen. Aus Gründen der besseren Darstellbarkeit ist vorliegend in den Figuren die Höhe des Gehäuses 1 im Vergleich zur Länge des Gehäuses 1 kleiner dargestellt. In der Praxis ist entweder die Höhe im Vergleich zur Länge des Gehäuses 1 größer oder die Länge im Vergleich zur Höhe des Gehäuses 1 kleiner, so dass in der Offenstellung die Absperrklappe 2 an dem Anschlag 7 anliegt.The
Zusätzlich ist eine nicht näher dargestellte Auslöseeinrichtung 8 vorgesehen. Die Auslöseeinrichtung 8 umfasst eine im Bereich der Gehäusewandung angeordnete Ausnehmung 9, in der ein nicht näher dargestellter Bolzen geführt ist. In der Offenstellung, d. h. in der Fixierposition des Betätigungsgriffes 4, befindet sich der Vorsprung 6 in der Ausnehmung 9. Im Brandfall wird der Bolzen automatisch durch eine Feder in einem gewissen Maß aus der Ausnehmung 9 nach außen verlagert, wodurch der Vorsprung 6 des Betätigungsgriffes 4 aus der Ausnehmung 9 gedrückt und die Absperrklappe 2 und damit auch der Betätigungsgriff 4 durch die von der Spiralfeder 3 erzeugte Rückstellkraft in die Schließstellung, d. h. in die Freigabeposition des Betätigungsgriffes 4, verschwenkt wird.In addition, a
Bei den Ausführungsbeispielen nach den
Soll nun bei dem Ausführungsbeispiel nach
In den
Hierzu ist ein den Betätigungsgriff 4 im Bereich der Drehachse 5 von außen überdeckendes, drehfest mit der Drehachse 5 verbundenes Element 16 vorgesehen, das zwei im Abstand zueinander angeordnete Seitenteile 17 aufweist. Jedes Seitenteil 17 bildet zwei Lagerflächen 18. Das andere Ende jeder Feder 15 wirkt seitlich auf das korrespondierende Gegenlager 19 des Betätigungsgriffes 4. Wie insbesondere
In der in den
Die weitere Verlagerung des Betätigungsgriffes 4 gegenüber der Drehachse 5 ist deshalb möglich, da der Betätigungsgriff 4 mit einem Formschluss mit der Drehachse 5 verbunden ist, wobei der Formschluss jedoch Spiel hat und die Nutzung dieses Spiels durch die Zusatzrückstellkraft bis zu dem Erreichen des Anschlages 7 durch die Absperrklappe 2 noch nicht freigegen ist.The further displacement of the
Hierzu weist die Drehachse 5 einen viereckigen Querschnitt auf. In dem Betätigungsgriff 4 selbst ist eine Ausnehmung mit ebenfalls vier Ecken vorgesehen. Allerdings ist jeder Randabschnitt 21 der Ausnehmung zwischen der Mitte und einer Ecke um den Winkel α aufgeweitet, so dass der Betätigungsgriff 4 gegenüber der Drehachse 5 Spiel hat.For this purpose, the
In
In den
In
Damit der Vorsprung 6 mit der Auslöseeinrichtung 8 zusammenwirken kann - so wie es in
Die Zusatzrückstellkraft wird bei dem in den
Durch den Kontakt zwischen der Absperrklappe 2 und der Innenseite des Gehäuses 1 resultiert eine Reibkraft. In der Schließstellung ist die Absperrklappe 2 über ihren Umfang mit der Innenseite des Gehäuses 1 in Kontakt. Zu Beginn des Verschwenkens müssen für ein Verschwenken aus der Schließstellung in die Offenstellung die höchsten Reibkräfte überwunden werden. Mit zunehmendem Verschwenken reduzieren sich die Reibkräfte.The contact between the
Wird der Betätigungsgriff 4 aus der in
Unterstellt, dass zu Beginn des Verschwenkens aus der Schließstellung die Reibkräfte kleiner als die für ein elastisches Verformen der federnd ausgebildeten Bereiche 22 erforderliche Zusatzrückstellkraft wären, würden die federnd ausgebildeten Bereiche 22 nicht elastisch verformt werden, so dass im Laufe des Verschwenkens auch nicht das vorbeschriebene "Nachholen" der Absperrklappe 2 erfolgen würde.Assuming that at the beginning of the pivoting from the closed position, the frictional forces would be smaller than the additional restoring force required for an elastic deformation of the resiliently formed
In den
In den
In den
Das Zwischenelement 14 und die Vorsprünge 27 können beispielsweise einteilig ausgebildet sein. Zumindest die Vorsprünge 27 bestehen aus einem elastischen und federnden Material, wie beispielsweise Kunststoff. Wie beispielsweise den
Wie
In der in den
Die weitere Verlagerung des Betätigungsgriffes 4 gegenüber der Drehachse 5 ist deshalb möglich, da der Betätigungsgriff 4 mit dem Formschluss mit der Drehachse 5 verbunden ist, wobei der Formschluss jedoch Spiel hat und die Nutzung dieses Spiels erst bei Überwindung der Rückstellkraft und der Zusatzrückstellkraft freigegeben wird.The further displacement of the
In den
Damit der Vorsprung 6 mit der Auslöseeinrichtung 8 zusammenwirken kann - so wie es beispielsweise in
Bei dem in den
Bei dem Ausführungsbeispiel nach den
Bei sämtlichen zuvor beschriebenen Ausführungsbeispielen kann die Zusatzrückstellkraft entweder gleich, größer oder kleiner sein als die zur Verlagerung der Absperrklappe 2 aus ihrer Schließstellung in ihre Offenstellung aufzubringende Rückstellkraft. Das eine Ende der jeweils verwendeten Spiralfeder 3 wirkt mit dem Gehäuse 1 und das andere Ende mit dem Betätigungsgriff 4 zusammen. Die Zusatzrückstellkraft kann größer oder kleiner als die Rückstellkraft oder gleich der Rückstellkraft sein. Hinsichtlich des Einflusses der Reibkraft bei sämtlichen zuvor beschriebenen Ausführungsbeispielen wird zur Vermeidung von Wiederholungen auf die Ausführungen zu
Die
In den
Nicht dargestellt ist die die Rückstellkraft erzeugende Feder. Hierbei kann es sich beispielsweise um eine Spiralfeder handeln, die unter dem Betätigungsgriff 4 angeordnet ist und dessen eines Ende mit dem Gehäuse 1 und dessen anderes Ende mit dem Betätigungsgriff 4 zusammenwirkt. Der Betätigungsgriff 4 weist eine Aufnahme 31 auf, durch die die viereckige Drehachse 5 geführt ist. Diese Aufnahme 31 ist allerdings aufgeweitet, so dass der Betätigungsgriff 4 gegenüber der Drehachse 5 Spiel hat. Erst wenn die Zusatzrückstellkraft aufgebracht worden ist, ist das durch die Aufweitung der Aufnahme 31 gegenüber der Drehachse 5 resultierende Spiel überwunden und es entsteht ein Formschluss zwischen dem Betätigungsgriff 4 und der Drehachse 5. Der Betätigungsgriff 4 weist einen nicht dargestellten Bereich auf, der mit einer ebenfalls nicht dargestellten Auslöseeinrichtung 8 zusammenwirkt.Not shown is the restoring force generating spring. This may be, for example, a coil spring, which is arranged under the
Die
Bei dem Ausführungsbeispiel nach
Bei dem Ausführungsbeispiel nach
According to the embodiment
According to the embodiment
Claims (16)
- Fire protection flap with a housing (1) and with a blocking flap (2) mounted therein, in particular centrally in relation to the housing cross-section, such as to be capable of pivoting about a pivot axle (23) between an open position and a closed position, wherein, for the pivoting, i.e. tensioning, of the blocking flap (2) out of its closure position against the resetting force into its open position, an actuating handle (4) is provided, which interacts directly or indirectly with the blocking flap (2) and is arranged on the outside of the housing (1) such as to rotate about a rotation axle (5) allocated to it, wherein at least one stop (7) is provided, against which the blocking flap (2) in its open position is directly or indirectly in contact, and wherein the fire protection flap comprises a triggering device (8), which can be brought into a fixing position and can be triggered by heat and can therefore be automatically moved into a release position, and wherein the actuating handle (4), and therefore the blocking flap (2) connected to it, in the open position, can be fixed against a resetting force by means of the triggering device (8), which is located in its fixing position, into a position which corresponds to the open position of the blocking flap (2), and can be pivoted out of this position after triggering of the triggering device (8), and the change caused by this for the triggering device (8) to move into its release position due to the resetting force caused by the actuating handle (4), into a second position corresponding to the closed position of the blocking flap (2), characterised in that either the material of the actuating handle (4) and/or an intermediate element (14) arranged between the actuating handle (4) and the rotation axle (5) is (are) configured in such a way that a further displacement outwards beyond the open position of the blocking flap (2) is possible, in particular a rotation, of the part of the actuating handle (4) which interacts with the triggering device (8), in the same direction of rotation (arrow 13), overcoming an additional resetting force which, after locking has taken place, exerts effect onto the blocking flap (2) and presses the blocking flap (2) against the stop (7).
- Fire protection flap according to the preceding claim, characterised in that the additional resetting force is greater than the resetting force to be applied in order to displace the blocking flap (2) out of its closed position into its open position.
- Fire protection flap according to claim 1, characterised in that the additional resetting force is less than or equal to the resetting force to be applied in order to displace the blocking flap (2) out of its closed position into its open position.
- Fire protection flap according to any one of the preceding claims, characterised in that the pivot axle (23) of the blocking flap (2) and the rotation axle (5) of the actuating handle (4) are configured concentrically or flush to one another, in particular as one piece.
- Fire protection flap according to any one of the preceding claims, characterised in that the actuating handle (4) is connected by positive fit to the rotation axle (5), wherein the positive fit has play, and the use of this play is not yet released by the additional resetting force.
- Fire protection flap according to any one of the preceding claims, characterised in that a slip coupling is provided as the intermediate element (14).
- Fire protection flap according to any one of claims 1 to 5, characterised in that the intermediate element (14) comprises at least one spring (15), of which one end exerts effect indirectly or directly onto the rotation axle (5), and the other end exerts effect indirectly or directly on the actuating handle (4).
- Fire protection flap according to the preceding claim, characterised in that the intermediate element (14) comprises at least one bearing surface (18), a corresponding counter-bearing (19), and at least one spring (15), wherein the rotation axle (5) supports at least one bearing surface (18), projecting laterally in relation to the rotation axle (5) and facing towards the rotation axis (5), on which the one end is supported of the spring (15), preferably configured as a pressure spring and aligned tangentially in relation to the rotation axle (5), and the actuation handle (4) comprises the corresponding counter-bearing (19) for the other end of the spring (15).
- Fire protection flap according to any one of the preceding claims, characterised in that an element (16) is provided which preferably covers the actuating handle (4) in the region of the rotation axle (5) and is connected to the rotation axle (5) in a torsionally-resistant manner, which comprises at least one side part (17) forming a bearing surface (18).
- Fire protection flap according to any one of the claims 1 to 5, characterised in that the intermediate element (14) comprises at least one region (22) configured as a spring, wherein the intermediate element (14) is arranged in a torsionally-resistant manner on the rotation axle (5), and the region (22) configured as a spring exerts effect indirectly or directly, in particular laterally, onto the actuating handle (4).
- Fire protection flap according to any one of the preceding claims, characterised in that at least one region (22) is configured as a projection (27) configured in the form of an arm, extending radially in relation to the rotation axle (5), of which the free end interacts with a cut-out opening (28) allocated to the actuating handle (4).
- Fire protection flap according to any one of the preceding claims, characterised in that the intermediate element (14) comprises two projections (27) in the form of arms, facing away from one another and extending radially, wherein the free end of each projection (27) interacts with a cut-out opening (28) allocated to the actuating handle (4).
- Fire protection flap according to any one of claims 1-5, characterised in that the intermediate element (14) is configured as a torsion-inducing element, which on one side is connected in a rotationally resistant manner to the rotation axle (5), and on other side is connected in a rotationally resistant manner to the actuating handle (4).
- Fire protection flap according to any one of the preceding claims, characterised in that the blocking flap (2), which in the open position is in contact with at least one stop (7), is aligned parallel to the direction of flow.
- Fire protection flap according to any one of the preceding claims, characterised in that at least one stop (7) is arranged on the inner side of the housing (1).
- Fire protection flap according to any one of the preceding claims, characterised in that a transfer mechanism (24) is provided in the housing (1) which engages at the blocking flap (2), and that at least one stop (7) is arranged at the blocking flap (2) and/or at the transfer mechanism (24), preferably on the side of the transfer mechanism (24) facing towards the blocking flap (2).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15155350T PL2910283T3 (en) | 2014-02-19 | 2015-02-17 | Fire protection flap |
EP15155350.0A EP2910283B1 (en) | 2014-02-19 | 2015-02-17 | Fire protection flap |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14155828.8A EP2910282B1 (en) | 2014-02-19 | 2014-02-19 | Fire protection flap |
EP15155350.0A EP2910283B1 (en) | 2014-02-19 | 2015-02-17 | Fire protection flap |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2910283A1 EP2910283A1 (en) | 2015-08-26 |
EP2910283B1 true EP2910283B1 (en) | 2018-06-06 |
Family
ID=50137525
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14155828.8A Active EP2910282B1 (en) | 2014-02-19 | 2014-02-19 | Fire protection flap |
EP15155350.0A Active EP2910283B1 (en) | 2014-02-19 | 2015-02-17 | Fire protection flap |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14155828.8A Active EP2910282B1 (en) | 2014-02-19 | 2014-02-19 | Fire protection flap |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2910282B1 (en) |
DK (2) | DK2910282T3 (en) |
ES (2) | ES2685818T3 (en) |
PL (2) | PL2910282T3 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2261153A1 (en) * | 1972-12-11 | 1974-07-04 | Nordluft Norddeutsche Ges Fuer | WITH A PIVOTING FIRE PROTECTION FLAP EQUIPPED WITH A CLOSING FORCE FOR VENTILATION SYSTEMS |
FR2374053A1 (en) * | 1976-12-14 | 1978-07-13 | Seitha | DEVICE FOR REMOTE OPERATION OF SAFETY DEVICES, SUCH AS FIRE VALVES, SMOKE EXHAUST VALVES |
DE4234800A1 (en) * | 1992-10-15 | 1994-04-21 | Schako Metallwarenfabrik | Air duct with an inserted fire damper |
FI123082B (en) * | 2009-04-30 | 2012-10-31 | Flaekt Woods Ab | Ventilation duct damper |
DE202012104995U1 (en) * | 2012-12-14 | 2013-01-31 | Trox Gmbh | Fire damper |
-
2014
- 2014-02-19 DK DK14155828.8T patent/DK2910282T3/en active
- 2014-02-19 PL PL14155828T patent/PL2910282T3/en unknown
- 2014-02-19 EP EP14155828.8A patent/EP2910282B1/en active Active
- 2014-02-19 ES ES14155828.8T patent/ES2685818T3/en active Active
-
2015
- 2015-02-17 PL PL15155350T patent/PL2910283T3/en unknown
- 2015-02-17 EP EP15155350.0A patent/EP2910283B1/en active Active
- 2015-02-17 DK DK15155350.0T patent/DK2910283T3/en active
- 2015-02-17 ES ES15155350.0T patent/ES2686646T3/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2910282A1 (en) | 2015-08-26 |
PL2910282T3 (en) | 2018-11-30 |
EP2910282B1 (en) | 2018-05-30 |
EP2910283A1 (en) | 2015-08-26 |
DK2910283T3 (en) | 2018-09-03 |
DK2910282T3 (en) | 2018-09-03 |
ES2686646T3 (en) | 2018-10-18 |
ES2685818T3 (en) | 2018-10-11 |
PL2910283T3 (en) | 2018-12-31 |
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